Buff Orpington roo on Cuckoo Marans sex linked questions

Discussion in 'General breed discussions & FAQ' started by chickenmama22, Sep 17, 2012.

  1. chickenmama22

    chickenmama22 Chillin' With My Peeps

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    I incubated eggs from a Buff Orpington roo on Cuckoo Marans hens. Only one hatched successfully and I would like to know if it's a girl or boy. Here's what he/she looks like:

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    Has anyone done this type of cross? I have read that it's sex-linked; I've searched all over the byc site and haven't found anything about what the cockerels vs pullets look like at hatch.

    Thanks in advance!
    Nancy
     
  2. aoxa

    aoxa Overrun With Chickens

    You are positive that it is fathered by the orp and mothered by the marans?
     
  3. chickenmama22

    chickenmama22 Chillin' With My Peeps

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    Yes, quite sure. Buff Orp roo, Cuckoo marans hen. It looks a lot like the offspring of a Cuckoo Marans roo on Buff orp hen. The chick's face looks like the BO, but with a dot on the head. The fuzz has a black "undercoat."

    I didn't mention that the 2 chicks that pipped, did so at the middle of the shell and seemed to be upsidedown in the shell (breach?) with huge tummies, too. The other hatchling's yolk was protruding and didn't survive. I've made some temperature adjustments, so hopefully the next batch will do better.
     
  4. chickenmama22

    chickenmama22 Chillin' With My Peeps

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  5. aoxa

    aoxa Overrun With Chickens

  6. aoxa

    aoxa Overrun With Chickens

     
    Last edited: Sep 18, 2012
  7. farmerChef

    farmerChef Chillin' With My Peeps

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    My Coop
    it has a white spot on its head, so its a male. It looks similar to my barred lemon blue chicks
     
    Last edited: Sep 18, 2012
  8. chickenmama22

    chickenmama22 Chillin' With My Peeps

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    Thanks!

    I think it's interesting that when I hatch pure Cuckoo Marans, the chicks all have a spot on their heads. I tell the males from females by the color of their backs -- the black ones are females and the grayish ones are males. I *thought* I'd know by the dot on their heads. Granted some of the pure Marans chicks I raise have yellowish dots and some have white ones, but I haven't paid enough attention to see if there's a connection between dot color and gender.

    That chick is starting to get some feathers. I'll wait a few more days and take a picture. Maybe that will help. :)
     
  9. LAFreewayChickens

    LAFreewayChickens Chillin' With My Peeps

    I would guess the dot color difference is gold or silver gene. (There as gold and silver CM). You could theoretically use it in a (red) sex-linked cross, but it would be hard to get a reliable read on such a small area. Plus you'd have to be sure the roo was homozygous for gold.

    That said, if you have a gold CM roo (he'd have gold on his hackles: http://www.feathersite.com/Poultry/CGK/Marans/GoldAndSilverCuckooMaranPs.JPEG), and (only) silver cuckoo hens, you could keep track of the relationship of dot color and sex. If the roo was homozygous for gold, the girls would have yellow spots and the boys would have white spots. If you established that was consistently the case, you could use it to sex at hatch. (In addition to size/shape of spot).
     
  10. nicalandia

    nicalandia Overrun With Chickens

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    Silver Or Gold is not expressed on Extended black background, any cream or white regions found on E chicks(Extended Black) including the headspot(barring) is only representing the delayed migration of aumelanoblasts not an expression of S or s+
     

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